Dispenser for plastic or comminuted material



Oct. 6, 1936. CROSSLEY DISPENSER FOR PLASTIC OR COMMINUTED MATERIALFiled Nov. 26, 1935 V'ATTORNEY Patented Oct. 6, 1936 UNITED STATESPATENT OFFICE DISPENSER FOR PLASTIC R COM- MINUTED MATERIAL '7 Claims.

The object of my invention is to devise a novel device for dispensingplastic or comminuted material.

As illustrated, it is in the form of a caulking gun for dispensingplastic caulking compound.

A further object of the invention is to devise a novel device of thischaracter, wherein the container for the material is moved relatively toa roller to expel the material from the container.

Other objects include novel means for retaining the container in place,novel mounting means for the roller and novel means for effectingrelative movement between the container and the roller.

With the above and other objects in view as will hereinafter clearlyappear, my invention comprehends a novel device for dispensing plasticor comminuted material.

0t further comprehends, a novel body portion, 20 novel means forreleasably mounting a roller on the body portion, a novel carrier forthe container for the material, and novel means to effect relativemovement of the carrier and body portion.

Other novel features of construction and advantage will hereinafter moreclearly appear in the detailed description and the appended claims.

For the purpose of illustrating the invention, I have shown in theaccompanying drawing, typical embodiments of it, which, in practice,will give satisfactory and reliable results. It is, however, to beunderstood that these embodiments are typical only and that the variousinstrumentalities of which my invention consists can be variouslyarranged and organized, and the invention is not limited to the precisearrangement and organization of these instrumentalities as herein setforth.

Figure 1 is a sectional elevation of a dispensing device, embodying myinvention.

Figure 2 is a front elevation, with the discharge end of the containerin section.

Figure 3 is a front elevation of the carrier for the container.

Figure 4 is a side elevation partly in section of a portion of thedispensing device.

Figure 5 is a side elevation of the roller with its shaft in section.

Figure 6 is a side elevation similar to Figure 5 but showing the partsin a different relation from that seen in Figure 5.

Figure 7 is a top plan view of the dispensing device.

Figure 8 is a sectional elevation of another embodiment of my invention.

Figure 9 is a sectional view on an enlarged scale of the cam means seenin Figure 8 for effecting relative movement of the roller and containercarrier.

Figure 10 is a view similar to Figure 9 but showing the parts in adifferent relation from that seen in Figure 9.

Similar numerals indicate corresponding parts.

Referring to the drawing:

l designates the body portion of a device embodying my invention fordispensing plastic or comminuted material.

The body portion I has side plates 2 which are apertured to receive ashaft 3 on which a pressure applying roll 4 is free to revolve. Thebearing ends of the shaft are eccentric as at 5, and the shaft isretained in assembled condition by a combined fastening device andreleasing member 3 which is substantially U-shaped and has its free endsreceived in apertures l at the free ends of the shaft, see Figures 5 and6.

The body portion has a base plate 8, and a channelled grasping portion 9extending downwardly from the base plate.

ll] designates a trigger pivoted at H to the body portion. The triggerhas a pin I2 on which is mounted a rack actuator 13 which at one end isbent around the pin and terminates in a forwardly extending stop memberM. A flat spring 15 has one end fixed to the rack actuator l3 by afastening device 16. The opposite end of the actuator is deflectedupwardly to engage a rack l1 secured to a carrier l8 having at oppositesides the depending flanges l9 which form rails slidable on the bottomplate of the body portion l. The carrier at its forward end is deflectedupwardly to form a front wall having a circular aperture 2| which opensthrough the top of the front wall by a slot 22. The carrier is providedwith a slot 23 adapted to receive an end of a container 24 which is inthe form of a collapsible tube having a threaded closure 25 at itsdischarge end, see Figure 1. The rear end of the tube is inserted in theslot 23 and the forward or discharge end is passed through the slot 22into the aperture 2|. The cap 25 is now removed and a nozzle 26 havingany desired contour at its discharge end is screwed on to the dischargeend of the tube. As the nozzle at its rear end is of greater diameterthan the slot 22, the container is retained in fixed position on thecarrier Ill.

The front wall 20 may be provided with forwardly extending side flanges21.

In the operation, when the tube 24 is in position ready for use, themember 6 is moved into the position seen in Figure 4 with its crossmember resting on the side plates 2 as in Figures 1 and 5. The triggerIt] is moved in the direction of the arrow in Figure 1, thereby movingthe carrier and container towards the roller 4. This exerts a pressureagainst the container to cause the material to be expelled from thenozzle 26.

In the embodiment seen in Figures 8, 9 and 10 the operation is the samebut I have shown a different mechanism for eiTecting relative movementbetween the carrier and the body portion.- In this form instead of usinga rack, I employ a rod 28 which is moved rearwardly by a cam 29- on anactuating arm 30 pivoted at 3| to an in-- verted U-shaped slide 32slidable on the rod 28.- A spring 33 between a fixed portion of the bodyportion and the slide 32 tends to move the slide forwardly on its rod. I

It will be apparent that when the actuator arm 36- is moved rearwardlyit will turn on its pivot 3'! causing thecam face 29 at the bottom ofthe groove of the actuator arm to frictionally engage or grip the rod sothat the rod and its carrier will be moved towards the roller.

When the member 6 is in the position seen in Figures 1 and 6, thepressure of the roller 4 is released and the carrier can be removed fromthe body portion so that a used tube can be removed and a new tubesecured in position.

The stop i l in Figure 1 contacting with the pivot pin ll limits theupward movement of the pawl formed by the arm [3.

My present invention has been found in practice to be very satisfactoryin dispensing plastic or other material from collapsible tubes under adesired pressure.

While the device is especially adapted for use as a caulking gun, itwill be apparent that it is not limited to such use but may be employedto dispense any plastic, semi-plastic or comminuted material.

It. will now be apparent that I have devised a new and useful dispenserfor plastic or comminuted material which embodies the features ofadvantage enumerated as desirable in the statement of the invention andthe above description, and while'I have, in the present instance,sho-wnand. described preferred embodiments thereof which will give in practicesatisfactory and reliable results, it is to be understood that theseembodiments are susceptible of modification in various particularswithout departing from the spirit or scope of the invention orsacrificing any of its advantages.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:-

1. In a dispensing device, a body portion, a

carrier slidable thereon, having a slot to receivethe rear end of acollapsible tube, and having a front wall provided with an aperture anda slot opening from the aperture through its well adapted to receive thedischarge end of the tube, the aperture being of greater diameter thanthe slot, a discharge tube connected with the discharge end of thecollapsible tube, extending into said aperture and of greater diameterthan said slot, a roll mounted in the body portion, and means to movethe carrier beneath the roll to cause the latter to compress thecollapsible tube.

2; In a dispensing device, a body portion, a carrier slidable in arectilinear path on the body portion, and having means to receive oneend of a collapsible tube for the material to be dispensed, said carrierbeing upwardly deflected at its forward end and slotted to receive thedischarge end of the tube, a roll mounted in the body portion tocompress said tube as the carrier is moved beneath the roll, means tomove the roll into" and out-of its compressing position, and means toeffect relative movement of the carrier and roll.

3. Ina dispensing device, a body portion, a shaft having eccentricportions mounted in the body portion, a roll on said shaft, a carrierfor a collapsible tube slidable on said body portion beneath said: roll,means to revolve said shaft to vary the position of the roll withrespect to the tube, and means to move said carrier beneath said roll;

4. m a: dispensing device, a body portion hav ing a grasping handle, acarrier for the material to be dispensed slidable on said body portion,a roll mounted on the body portion, and relatively to which. the carrieris moved, a rod on the carrier,v a. spring pressed slide on the rod, anda manually actuated cam member movably mounted on the slide and havingacam face" to grip: the rod to cause the carrier to move relatively to"the roll.

The combination with roll free to revolve, ofa carrier movable in arectilinear path with respect to the roll, a rod secured to the carrier,a slide on the rod, and a manually actuated cam movably" mounted on theslide and having a camshaped groove to partially surround the rod;

6. The combination with a rod, of a gripping member to move therod'having a cam shaped groove partially'surrounding the rod, and means toturn said member to" cause it to cam against

